During the second lab visit, participants will return their accelerometers and following the same pattern of testing as the first visit, excluding the questionnaires (SHQ, FAS & IPAQ) and anthropometric information. The order of testing will follow ACSM guidelines therefore strength and aerobic/anaerobic capacity will be first. Alongside this, age-matched healthy participants with no known interstitial lung disease (ILD) or other condition linked to reduced physical activity will used as a comparison between sarcoidosis and healthy normative values.